using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        var arr = Console.ReadLine().Trim().Split(' ');
        var a = long.Parse(arr[0]);
        var b = long.Parse(arr[1]);
        string x;
        var xs = new List<string>();
        
        foreach (var s in arr)
        {
            if (s[0] == '-')
            {
                x = s[1..];
            }
            else
            {
                x = s;
            }
            if (x.Length >= 3)
            {
                xs.Add(x[1..]);
            }
        }
        
        var flg = true;
        flg = flg && (xs.Count == 2);
        if (flg)
        {
            var cs = (xs[0] + xs[1]).ToCharArray();
            foreach (var c in cs)
            {
                flg = flg && (c == '0');
            }
        }
        if (flg)
        {
            Console.WriteLine(a * b / 10);
        }
        else
        {
            string ans;
            if (arr[0].Length + arr[1].Length >= 12)
            {
                ans = "E";
            }
            else
            {
                var y = a * b;
                
                if (y > 99999999)
                {
                    ans = "E";
                }
                else if (y < -99999999)
                {
                    ans = "E";
                }
                else
                {
                    ans = y.ToString();
                }
            }
            
            Console.WriteLine(ans);
        }
    }
}